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Overall view of the aft end of the S-IVB, including the J-2 engine, hydrogen feed line, ambient helium spheres, and O2H2 burner (aka "helium heater"). Picture 1 of 2. I last visited KSC before I knew what a O2H2 burner was, and so I have no more detailed photos of it on this S-IVB stage, but see the pictures of the helium heater in my Johnson Space Center S-IVB picture set. | ||||
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